this derivation will be built:
  /nix/store/rj78yc20v79fhzy9lbr49r7vnix1qfhl-treefmt-check.drv
building '/nix/store/rj78yc20v79fhzy9lbr49r7vnix1qfhl-treefmt-check.drv'
treefmt-check> traversed 474 files
treefmt-check> emitted 246 files for processing
treefmt-check> formatted 246 files (0 changed) in 1.235s

post-build step Upload to niks3: ok
time=2026-09-18T20:15:55.117Z level=INFO msg="Uploading 0 paths to 127.0.0.1 (1 already cached)"
time=2026-09-18T20:15:55.404Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-18T20:15:55.976Z level=INFO msg="Upload complete. (879ms)"